In a small bowl combine the lime juice, sugar and fish sauce. Set aside.

Bring a saucepan of water to a boil. Mince the chicken, or pulse it in a food processor until it is coarsely ground. Put chicken into the boiling water. When it turns white and is cooked, drain it well.

In a bowl, mix chicken with cilantro, the two types of onion, ginger, peanuts and the dressing.

Serve with the cucumber, tomato and lettuce on the side. Diners can fold the iceberg lettuce around bites of neam sohd.